<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <div style="background-color:red; float:left; width: 20%;">21</div>
    <div style="background-color:black; float:right; width: 80%;">ew</div>
    <div style="width: 30%;">

        <div style="background-color:bisque; float:right; width: 80%;">ew</div>
    </div>
</body>
</html>